Internal-combustion engine



INTERNALCOIVIBUSTION ENGINE. APPLICATION IIL'ED APR. I7. 1916. RENEwEI) 00T. 22l 1920.

.1,386,54 Patented Aug. 2, 1921..

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WITNESSESI IN VEN TOR.

A TT ORNEY y www.

' A. L. WULFF.

INTERNAL COMBUSTION ENGINE.

APPLICATION msn APR. lz. wie. RENEwEn ocT. 22. 1920.

1386544' Patented Aug. 2, 1921c 5 2? 2 SHEETS-SHEET 2.

F//o WITNESSES, INVEN TOR.

4M ATTORNEY NUNITED STATES PATENT OFFICE.

AUGUST LwoLrrxoF cnrcaao, rumors.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Aug. '2, 1921.

Application led April 1 7, 1916, iSerial No. 91,752. Renewed October 22, 1920. Serial No. 418,766.

To all whom it may concern:

Be it known that I, AUGUST L. WoLFF, a citizen of the United S ates, residing at Chicago, in the county of ook and State of Illinois, have invented new and useful 4Improvements in Internal-Combustion Engines, of which the following is a specification.

The present invention relates to a combined cooling and vaporizing system for an internal combustion engine.

The objects of the invention are, `first, to provide a means to utilize low grades of liquid fuels; a vsecond object is to provide -a means for cooling the cylinders with liquid fuel; a third object is to provide means for utilizing heat directly from the cylinders to vaporize fuel. Another object is to provide a means for supplying automatically, various kmds and various proportlons of fuels to a vaporlzing system.

" Another object is to provide a means of preventing over-vaporization. Referring to the drawings: Figure 1, is a plan view showing a device embodying the present invention. Fig. 2 is a front elevation of the present invention shown with the primary vaporizer removed.

Fig. 3, is a front elevation of a primary vaporizer shown assembled.

Fig. 4, is .a plan view of an adjustment pla f Fig. 5, is a cross section taken on line aa Fig., 3.

ig. 6is a partialcross section of inner part of primary vaporizer taken on line b?) Fig. 7, is a vertical ,section of the outer cylinder of multiple fuel supply valve taken on line cc, (Fig. 1.)

Fig. 8, is a cross section of outer cylinder of multiple fuel supply valvel taken on line dd, Fig. 3.

"Fig, 9, is a plan view of a spider shown in position in 4cross-section chamber 23,

Fig. 6).

Fig. 10, is a front elevation of chamber of primary vaporizer.V shown with aspider removed.

Fig. 11, is a front `elevation of the outer body of primary vaporizer.

Fig. 12, is a plan view of" part `shownin ig; 13, is a vertical section taken on line ee,( ig. l1). y

Fig. 14, is a vertical section taken on line ff, Fig. 1 showing admission and exhaust valves and passages.

Fig. 15, 1s a plan view of combination back fire check and exhaust valve, (Figs. 1 and 2.)

lFig 16, is a vertical section taken on line gg, Fig. 15.

Fig. 17, is a cross-section taken on line hh, Fig. 16.

The device embodying the invention consists essentially of a casing around the cylinder and forming part of the cylinder wall; also forming a vaporizing chamber around the cylinder. Provided in the wall of said chamber is a clean-out opening (2), a draincock opening (3) and openings (4) above each other to form a means of connection for a primary vaporizer, shown in Fig. 3, said primary vaporizer to be hereinafter described. p

The upper part of said chamber 1, connects with a common passage, 8 Fig. 2, havair valve 5.

eferring to ig. 3 which illustrates what will be designated as a primary vaporizer consisting of an outer body 15, having a cupshaped container with openings 16 and 17, Fig. 6, from the sides thereof leading to passages 18 and 1,9 in the outer body and connecting with vaporizing chambers 1 around the cylinder.

Said cup-shaped container has openings 20 in opposite sides thereof, walls projecting outwardly and upwardly around the lower part of said opening 20 forming a trough. A cover 21 with a hole through the center thereof, is securely fastened over the top of said cup-shaped container by means of a thread 22.

In the cup shaped container a combination fuel-vaporizing and fioat chamber 23 (Figs. 3, 6 and 10) is rotatively fitted therein, having openings 16 and 17 in opposite sides thereof, opening into passages'18 and 19 of outer body and having, perforations 2 4 in opposite sides thereof to form an inlet through openings 2O in the cup-shaped outer bod 15.

, Ayconical shaped float 25 having an opening through. the center to receive an adyustable valve part 26 in lower end. Said adjustable valve part is fastened and adJusted therein by means of a thread contained 1n said float. A cross-shaped splder 27 having a tubular part integral therewlth extending upwardly through cover and non-rotatively mounted on combination fuel vaporizing and float 25 within said chamber, the lower end thereof forming a part of a valve within said float 25, the upper part thereof comprising an inner. part of a multiple 'fuel supply valve and having a slot 30 diagonally cut therein to connect with inner passage 31 therein, leading into the combination fuel vaporizing and float chamber and another slot 32, cut diagonally around to receive a pin 33 to slide therein. An arm 34 is nonrotatively mounted on the upper end. An outer cylinder 35 of a multiple fuel supply valve securely mounted to cover 21, with supply tubes 36 connected on the outer side of the outer cylinder 35 connecting with a number of passages 37, to different positions on the inner side thereof; a pin 33 near the upper end thereof extending` through the inner side thereof to slide in a diagonally cut slot 32 around the outer side of common fuel supply tube 29, comprising the inner part of said multiple fuel supply valve, so arranged that rot-ating the common fuel supply tube 29 raises or lowers common fuel supply tube 29, thus changing the position of ,the passages 37 opening into slot 30 in common fuel supply tube 29 so as t. open one or more passages 37 from on more of the supply tubes 36 and varying numbers of said passages 37, from different supply tubes 36.

Thermostat 38 operated by the heat of the cylinder, securely connected on or adjacent to the cylinder with suitable connections for rotating the arm 34 non-rotatively mounted on common supply tube '29.

Operation is as follows:

Fuel is supplied to one or more supply tubes 36 flowing through one or more passages 37 from one or more tubes 36 opening into VYslot 30 and-lfl'qw'ing through said commonzfuel supply tube 29 through the valve in fioat`25 around the lower end of said tube and up around said commons-'fuel supply ltube flowing over upper edge of a float 25 arund said common fuel supply tube 29 into a combination fuel vaporizing and float chamber 23.

The arm 34, mounted on Acommon fuel supp ly tube 29 is rotated by thermostat`3`8 exposed to and operated by the heat from the cylinders.

Thel heat of the cylinders through said apparatus 38 automatically rotating common fuel supply tube 29, raising or lowering said tube changing the kinds and proportions of differentl kinds of fuels fiowingl from passages 37 through slot in common fuel supply tube 29 and down there through and raising or lowering the oat 25 around said tube containing an adjustable valve part 26, within said float and raising a fuel level in a combination fuel vaporizing and float chamber 23 in the primary vaporizer.

Air is drawn b v the suction stroke'of th pistons in the cylinders or forced into the combination fuel vaporizing and float chamber in primary vaporizer, through openings 2() in the side of cup-shaped container 15 through a number of perforations in the sides of combination fuel vaporizing and float chamber 23. opened and closed by the rotation of said chamber rotated by arm 28 flowing into said chamber and therefrom through openings 16 and 17, simultaneously opened and closed b v the same means of rotation of said chamber` flowing into passage 18 above a constant fuel level or through passage 19 through below a constant fuel level contained in said combination fuel vaporizing and float chamber 23 and in passage .19, carrying fuel therewith and being primarily vaporized while passing through said chamber 23, and through said passages 18 and 19 and passing through holes in an adjustment plate, (Fig. 14), controlling the quantity by the sizes of the holes in said plates and then passing into each vaporizing chamber, by the sizes of the holes in said plates. The vaporizing chambers 1 forming part of cylinder walls 40 around the lower end of the cylinder is cooled,.and the heat of the cylinders controlled by the conduction of the heat of the cylinder t0 the fuel around the cylinder wall.

The fuel in the vaporizing chambers 1 around the cylinders is vaporized directly by the heat of the cylinder walls 40 and passes with air through chambers 1, around the cylinder cooling the cylinders and being superheated directly by the heat of the cylinder and passing into a. common passage 8 containing zin-auxiliary air valve 5, through 'its upper shell, for admitting varying quantities of additional air to weaken a combustible fuel charge, passing through said passage 8 into combination backfire check and exhaust valve opened by the pressure of the suction stroke of the 4piston in the cylinder, permitting a combustible mixture to pass therethrough and passing through passages 41 to the intake valves 42, and thence through a passage 43, into the cylinders by the suction stroke of the pistons in the cylinders moving to and from the ends thereof; the aforementioned combination back-fire check and exhaust valve forming a passage fires through an intake valve 42 from a cylinder, preventing a back-fire charge entering the vaporizing chamber, the back-tire exhaust valve opening out of the outer side of said combination back-fire check and exhaust valve is held closed by the tension of the cylinders adapted to supply various qualities of fuel, athermostat actuated by the heat of a cylinder, a multiple fuel supply valve operated by the thermostat adapted to communicate the conduits with the cylinders to vary the quality of the fuel in communication with the cylinders in proportion to the variation of the heat of the cylinder.

2. An internal combustion engine including in combination cylinders, a plurality of sources of fuel supplies of vvarious qualities communicable with the cylinders, a thermostat actuated by the heat of the cylinders and a valve communicating selectively a plurality of the sources of fuel supplies with the cylinders operated by the thermostat to vary the quality of the fuel suppliedto the cylinders in proportion to the variation of the heat of the cylinders.

3. An internal combustion engine including in communication cylinders, afplurality of sources of fuel supplies of various qual-v ities communicable With the cylinders, a thermostat actuated by the heat of the cylinders and a valve operated by the thermostat communicating selectively a plurality of the sources of fuel supply in varying proportions of their individual capacities to vary the quality of the fuel in communication with the cylinders with the heat of the cylinders.

4. An internal combustion engine including in combination cylinders, a plurality of sources of fuel supplies communicable with the cylinders, a .thermostat actuated directly by the heat of the cylinders, and valved means communicating a plurality of the sources of fuel supplies with the cylinders in varying proportions of their capacities operated by the thermostat for selecting varying proportions of fuel from various sources with the heat of the cylinders.

5. An internal combustion engine including in combination cylinders, a plurality of sources of fuel supplies communicable With the cylinders, a thermostat actuated by the heat ofthe cylinders and valved means operated by the thermostat for communicating a. plurality of the sources of fuel supplies with the cylinders in varying proportions of their individual capacities and in varying proportions of their collective capacities with the heat of the cylinders.

6. An internal combustion engine including in combination cylinders, a plurality of sources of fuel supplies communicable with the cylinders, a thermostat actuated directly by the heat of a cylinder, and a valve operated by the thermostat for communicating selectively a plurality of the sources of fuel supplies with the cylinders in varying proportions of their individual capacities and in varying proportions of their collective capacities with the heat of the cylinder. 7. An internal combustion engine including in combination cylinders, a plurality of sources of fuel supplies, each supplying a fuel of different quality, a thermostat actuated directly by the heat of a cylinder and valved means operated by the thermostat to vary the quality of the fuel in communication with the cylinders in proportion to the variation of the heat of the cylinders.

8. An internal combustion engine including cylinders, a plurality of sources of fuel supplies communicable with the cylinders each supplying a fuel of different quality and means adapted to vary the quality of the fuel in communication with the cylinders in proportion to the variation of the heat of the cylinder.

9. An internal combustion engine including cylinders, a plurality of sources of fuel supplies communicable with the cylinders and means adapted to thermostatically communicate a plurality of the sources of fuel supplies with the cylinders.

10. An internal combustion engine, including in combination a cylinder,'a thermostat, a plurality of fuel conduits communicable with the cyinder, a multiple fuel supply valve adapted to communicate and excommunicate the fuel conduits with the cylinder operated with the thermostat actuated by the heat of the cylinder to vary the quality of the fuel supplied to the cylinder in proportion to the variation of the heat of the cylinder.

11. An internal combustion engine, including in combination, a cylinder, a thermostat, a plurality of fuel conduits communicable with the cylinder, a multiple fuel supply valve adapted to communicate and excommunicate the fuel conduits with the cylinder operated with thethermostat actuated by the heat of the cylinder.

12. An internal combustion engine including cylinders, a fuel holding casing vaporizing fuel by conducting the heat of the cylinders to the fuel, means for thermostatically supplying varying 'proportions of fuel of different qualities to said casing and means for thermostatically controlling the heat of the cylinders.

' cluding cylinders, a fuel-holding Vaporizing p 13. An internal combustion engine incasing vaporizin fuelr by conducting the heat of the cylin ers to the fuel and means adapted to vary the quality of fuel supplied tothe casing in proportion to the variation of the heat of the cylinders.

14. An internal combustion engine including cylinders, amultiple fuel supply valve,

a fuel holding vapcrizing casing exposed to;v the heat of the cylinders vaporizing fuel for consumption in the cylinders'and to cool the cylinders, and means for supplying fuel-of varying qualities to the casing with the -fuel supply l'valve operated with a thermostat actuated by the heat of the cylinders.

15. An internal combustion engine including cylinders, a fuel vaporizing casing exposed to the heat of the cylinders, cooling the cylinders by conducting the heat of the cylinders to the fuel to vaporize the fuel for consumption in the cylinders, and means for controlling the heat of the cylinders and the quality of fuel supplied to the casing with the heat of the cylinders.

A16. An internal combustion engine including a cylinder; av fuel holding vaporizing casing exposed to the heating action of the cylinder to vaporize liquid fuel by conduct- Izing the heat .from the cylinderto the fuel 'to cool the cylinder; and a thermostatically controlled float with a valve therein, in a float chamber connected with said Vaporizing casing for controlling the fuel level in said chamber.

17. An internal combustion engine including a cylinder, a fuel holding vaporizing casin exposed to the .heating action of the cy inder to vaporize liquid uel by conducting the heat from the c linder to the fuel to cool the cylinder; an a thermostatically operated multiple fuel supply valve to supply --va-rying proportions of different fuels of varyin cooling qualities to said casing.

18\l internal combustion engine including a cylinder; a fuel vaporizing chamber exposed tp the heating action of the cylinder tofvapoiie xliquid fuel by conducting the heat from th`e\cylinder to t e fuel to cool the cylinders; a lmultiple fuel suppl valve to supply varying proportions of d1 erent fuels of varyincoolin qualities to said chamber,

operated y a t ermostat exposed to the vheating act1on of tlie` cylinder to supply fuel of suitable cooling uality.

19. In an interna combustion engine, a fuel vaporizing chamber around a cylinder containing liquid fuel serving to cool the cylinder by conducting the heat'of the cylinders to the fuel to va orize the fuel for consumption in the cy inder; means for obtaining access to said chamber; means for drainin said chamber; means for controlling the fue level in said chamber, means for controlling the heat pf the cylinder with the kind of fuel supplied to said chamber, and means for supplying automaticall different kinds of fuel to said chamber, wit a multiply fuel supply valve operated with a thermostat operated by the heat of a c linder.

v AUGUST L'. OLFF.

Witnesses:

MATILDA A..Scnm'1'r,

E. LOUISE B. WmLmus.

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